Just tried Manjaro in a VM: Comes with qpdfview. Of course you might get openSUSE in a flavor without a PDF viewer, but you could say the same thing about Ubun

Just tried Manjaro in a VM: Comes with qpdfview. Of course you might get openSUSE in a flavor without a PDF viewer, but you could say the same thing about Ubuntu: Just get the Server edition. So when we're talking about "by default" I also consider the "default" flavor of those distributions.